We did not stay here but we did visit. I suggest going there when it's less busy (not the weekends).
It's really hard to not get lost and miss a hallway with rooms and suites. If you can follow the map, I suggest you do (we couldn't really follow the map, all the halls looked the same haha).
We did not try the free tour, but maybe we should have.
The theme this year was the Inuit culture. The designs in the rooms, suites, hallways, and sculptures were really beautiful and incorporated the theme very well.
Besides dressing warm in general, if you're going to drink at the bar I suggest wearing gloves. The glasses are made out of ice so your hands get really cold really fast. It's good to not wear jeans and wear snow pants or a material similar to that so you can try the slides. There are two, the North Face one inside and the Giant Slide outside. Both were fun but the Giant Slide was obviously a lot bigger, funner, and faster. We also liked the Maple Taffy at the store outside, it was a fun and very sweet experience. The chapel is very pretty and my friend had her wedding here, it was a great experience.